2.1 Understand energy forms, sources and characteristics
| | | 2.1.1 | | identify ways that heat can be produced (e.g., burning, friction, solar, nuclear, electric) | | 2.1.2 | | measure the amount of heat absorbed by an object by using a thermometer | | 2.1.3 | | distinguish between a material that transmits light and a material that blocks light |
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